SPF Vs DKIM: What’s the Difference and Do You Need Both?
The postmark-mcp incident exposed a new category of threat: malicious MCP servers silently exfiltrating emails at scale. Learn how AI supply chain attacks target email infrastructure — and how DMARC and email authentication protect you ... Read More
What Is a DKIM Selector and How to Manage It Across Multiple ESPs?
Microsoft is phasing out NTLM authentication in three stages. Learn what the deprecation timeline means, why NTLM is a security risk, how to migrate to Kerberos, and what MSPs need to do now ... Read More
Exchange SPF Check: How to Verify, Publish, and Fix SPF Records in Exchange
Microsoft is phasing out NTLM authentication in three stages. Learn what the deprecation timeline means, why NTLM is a security risk, how to migrate to Kerberos, and what MSPs need to do now ... Read More
How to Set Up an SPF Record for Gmail
Learn how to set up an SPF record for Gmail and Google Workspace. Find the correct Google mail SPF record syntax, verification, common mistakes, and more ... Read More
